The pathology and immunohistochemical staining of the four NETs with BRAF V600E or G593S mutation are shown in Figure 4 (G1, 1-cm rectal NET; G2, 8.5 cm pancreatic NET; G3, 6.5 cm colon NET; and G3, 3.2 cm colon NET). Here, BRAF is linked to rectum neuroendocrine neoplasm.